diff options
Diffstat (limited to 'toolkit/xre/nsSigHandlers.cpp')
| -rw-r--r-- | toolkit/xre/nsSigHandlers.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/toolkit/xre/nsSigHandlers.cpp b/toolkit/xre/nsSigHandlers.cpp index 68d909848c..11648e45ac 100644 --- a/toolkit/xre/nsSigHandlers.cpp +++ b/toolkit/xre/nsSigHandlers.cpp @@ -154,6 +154,22 @@ static void fpehandler(int signum, siginfo_t *si, void *context) NS_DebugBreak(NS_DEBUG_ABORT, "Divide by zero", nullptr, __FILE__, __LINE__); } +#ifdef XP_MACOSX + ucontext_t *uc = (ucontext_t *)context; + +#if defined(__i386__) || defined(__amd64__) + _STRUCT_FP_CONTROL *ctrl = &uc->uc_mcontext->__fs.__fpu_fcw; + ctrl->__invalid = ctrl->__denorm = ctrl->__zdiv = ctrl->__ovrfl = ctrl->__undfl = ctrl->__precis = 1; + + _STRUCT_FP_STATUS *status = &uc->uc_mcontext->__fs.__fpu_fsw; + status->__invalid = status->__denorm = status->__zdiv = status->__ovrfl = status->__undfl = + status->__precis = status->__stkflt = status->__errsumm = 0; + + uint32_t *mxcsr = &uc->uc_mcontext->__fs.__fpu_mxcsr; + *mxcsr |= SSE_EXCEPTION_MASK; /* disable all SSE exceptions */ + *mxcsr &= ~SSE_STATUS_FLAGS; /* clear all pending SSE exceptions */ +#endif +#endif #if defined(LINUX) ucontext_t *uc = (ucontext_t *)context; |